I have figured looking through several motorcycle specifications that intake valve area represents 33.5% of bore area on average. That would put new valve size at 31.5mm.

Would it be correct to base my new choke point of 88% based on the new hypothetical valve size? Even though i will keep the intake valve size at 30mm. It being potentially valve limited would it be better to move choke point closer to valve to maintain diverging angle?

I was looking to push peak horsepower from 12500 RPM to 13500 RPM,what would be the best way to accomplish it? Port length, port taper, camshaft duration?

Would enlarging from choke point and all the way back to throttle blade aid in shifting power? And from throttle blade to the velocity stack? I have an existind sidewinder. Could i shorten the first step and leave CSA alone?

I can have cams ground to whichever spec i want. What are the recommendations?